Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-naca4418-il-50000 Airfoil,naca4418-il Reynolds number,50000 Ncrit,9 Mach,0 Max Cl/Cd,5.31304 Max Cl/Cd alpha,4.75 Url,http://www.airfoiltools.com/polar/csv?polar=xf-naca4418-il-50000 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -10.250,-0.2779,0.12876,0.12121,-0.0274,1.0000,0.3077 -10.000,-0.2957,0.12849,0.12103,-0.0254,1.0000,0.3169 -9.750,-0.3348,0.12912,0.12184,-0.0231,1.0000,0.3205 -9.500,-0.2931,0.12335,0.11601,-0.0218,1.0000,0.3285 -9.250,-0.3108,0.12299,0.11575,-0.0193,1.0000,0.3386 -9.000,-0.3536,0.12356,0.11650,-0.0164,1.0000,0.3426 -8.750,-0.3111,0.11827,0.11115,-0.0152,1.0000,0.3518 -8.500,-0.3414,0.11860,0.11161,-0.0121,1.0000,0.3619 -8.250,-0.3456,0.11589,0.10898,-0.0102,1.0000,0.3674 -8.000,-0.3344,0.11363,0.10673,-0.0081,1.0000,0.3780 -7.750,-0.3947,0.11540,0.10870,-0.0036,1.0000,0.3855 -7.500,-0.3529,0.11030,0.10355,-0.0032,1.0000,0.3943 -7.250,-0.3865,0.11047,0.10385,0.0006,1.0000,0.4058 -7.000,-0.6052,0.08452,0.07783,-0.0184,1.0000,0.2391 -6.750,-0.6119,0.08025,0.07352,-0.0181,1.0000,0.2377 -6.500,-0.6218,0.07499,0.06813,-0.0190,1.0000,0.2362 -6.250,-0.6300,0.06908,0.06198,-0.0208,1.0000,0.2360 -6.000,-0.6319,0.06322,0.05573,-0.0231,1.0000,0.2373 -5.750,-0.6274,0.05774,0.04968,-0.0255,1.0000,0.2406 -5.500,-0.6136,0.05766,0.04984,-0.0233,1.0000,0.2457 -5.250,-0.6011,0.05545,0.04742,-0.0234,1.0000,0.2509 -5.000,-0.5865,0.05205,0.04345,-0.0253,1.0000,0.2571 -4.750,-0.5713,0.05074,0.04210,-0.0248,1.0000,0.2625 -4.500,-0.5276,0.04974,0.04086,-0.0296,0.9910,0.2732 -4.250,-0.4802,0.04867,0.03954,-0.0350,0.9793,0.2842 -4.000,-0.4378,0.04762,0.03804,-0.0395,0.9685,0.2973 -3.750,-0.4043,0.04714,0.03765,-0.0416,0.9574,0.3083 -3.500,-0.3666,0.04640,0.03661,-0.0448,0.9467,0.3230 -3.250,-0.3208,0.04617,0.03617,-0.0490,0.9367,0.3424 -3.000,-0.2981,0.04582,0.03595,-0.0490,0.9260,0.3565 -2.750,-0.2628,0.04566,0.03576,-0.0511,0.9159,0.3771 -2.500,-0.2294,0.04554,0.03564,-0.0529,0.9058,0.3996 -2.250,-0.2029,0.04555,0.03566,-0.0535,0.8960,0.4221 -2.000,-0.1643,0.04567,0.03575,-0.0559,0.8864,0.4517 -1.750,-0.1449,0.04582,0.03601,-0.0553,0.8764,0.4748 -1.500,-0.1075,0.04611,0.03645,-0.0570,0.8675,0.5076 -1.250,-0.0914,0.04640,0.03680,-0.0559,0.8577,0.5360 -1.000,-0.0558,0.04671,0.03729,-0.0571,0.8489,0.5770 -0.750,-0.0412,0.04708,0.03782,-0.0555,0.8396,0.6125 -0.500,-0.0136,0.04733,0.03832,-0.0552,0.8310,0.6649 -0.250,0.0023,0.04763,0.03891,-0.0529,0.8226,0.7233 0.000,0.0114,0.04775,0.03944,-0.0487,0.8144,0.8044 0.250,0.0798,0.04843,0.04025,-0.0567,0.8038,1.0000 0.500,0.0996,0.04921,0.04063,-0.0584,0.7945,1.0000 0.750,0.1348,0.05022,0.04131,-0.0609,0.7860,1.0000 1.000,0.1412,0.05141,0.04233,-0.0597,0.7774,1.0000 1.250,0.1898,0.05235,0.04301,-0.0632,0.7691,1.0000 1.500,0.1832,0.05382,0.04439,-0.0604,0.7607,1.0000 1.750,0.2108,0.05499,0.04540,-0.0614,0.7527,1.0000 2.000,0.2290,0.05638,0.04667,-0.0614,0.7446,1.0000 2.250,0.2387,0.05786,0.04806,-0.0605,0.7369,1.0000 2.500,0.2864,0.05890,0.04894,-0.0634,0.7286,1.0000 2.750,0.2740,0.06087,0.05089,-0.0605,0.7219,1.0000 3.000,0.2943,0.06234,0.05228,-0.0607,0.7143,1.0000 3.250,0.3201,0.06386,0.05371,-0.0614,0.7065,1.0000 3.500,0.3182,0.06589,0.05571,-0.0598,0.7008,1.0000 3.750,0.3465,0.06733,0.05709,-0.0607,0.6926,1.0000 4.000,0.3594,0.06928,0.05898,-0.0604,0.6859,1.0000 4.250,0.3585,0.07154,0.06123,-0.0592,0.6817,1.0000 4.500,0.3701,0.07359,0.06326,-0.0591,0.6765,1.0000 4.750,0.3997,0.07523,0.06485,-0.0599,0.6667,1.0000 5.000,0.3979,0.07783,0.06746,-0.0590,0.6647,1.0000 5.250,0.4013,0.08055,0.07018,-0.0588,0.6646,1.0000 5.500,0.4114,0.08356,0.07319,-0.0593,0.6669,1.0000 5.750,0.4328,0.08688,0.07652,-0.0610,0.6694,1.0000 6.000,0.3764,0.09290,0.08268,-0.0600,0.7303,1.0000 6.250,0.3692,0.09389,0.08368,-0.0576,0.7200,1.0000 6.500,0.4198,0.09845,0.08821,-0.0618,0.7092,1.0000 6.750,0.4003,0.09836,0.08814,-0.0581,0.6973,1.0000 7.000,0.4377,0.10242,0.09219,-0.0609,0.6886,1.0000 7.250,0.4340,0.10317,0.09296,-0.0589,0.6746,1.0000 7.500,0.4508,0.10622,0.09602,-0.0596,0.6666,1.0000 7.750,0.4703,0.10843,0.09824,-0.0600,0.6524,1.0000 8.000,0.4685,0.11041,0.10024,-0.0589,0.6429,1.0000 8.250,0.5086,0.11430,0.10415,-0.0613,0.6309,1.0000 8.500,0.4926,0.11520,0.10507,-0.0590,0.6200,1.0000 8.750,0.5426,0.12040,0.11029,-0.0623,0.6102,1.0000 9.000,0.5179,0.12030,0.11021,-0.0593,0.5980,1.0000 9.250,0.5585,0.12528,0.11523,-0.0619,0.5901,1.0000